EP3089343A1 - Dispositif de conversion de puissance - Google Patents

Dispositif de conversion de puissance Download PDF

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Publication number
EP3089343A1
EP3089343A1 EP13900127.5A EP13900127A EP3089343A1 EP 3089343 A1 EP3089343 A1 EP 3089343A1 EP 13900127 A EP13900127 A EP 13900127A EP 3089343 A1 EP3089343 A1 EP 3089343A1
Authority
EP
European Patent Office
Prior art keywords
converter
electric power
circuit
capacitor
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13900127.5A
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German (de)
English (en)
Other versions
EP3089343B1 (fr
EP3089343A4 (fr
Inventor
Tetsuo Sugahara
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Publication date
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Publication of EP3089343A4 publication Critical patent/EP3089343A4/fr
Application granted granted Critical
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
    • H02H3/023—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order by short-circuiting
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • H02H3/048—Checking overvoltage diverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/09—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/1216—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for AC-AC converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0009—Devices or circuits for detecting current in a converter
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/322—Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock

Definitions

  • the present disclosure relates to a power conversion device including a converter and an inverter, and particularly relates to overvoltage suppression of the power conversion device.
  • An AC electric vehicle equipped with a converter and an inverter uses the converter to convert high voltage AC electric power from an AC power supply into DC electric power, uses the inverter for conversion into variable voltage and variable frequency 3-phase AC electric power, and drives the electric motor.
  • the DC current side of the converter is connected to a filter capacitor in parallel with the load (inverter).
  • the converter and inverter can perform regenerative braking. During regenerative braking, in a manner opposite to the aforementioned operation, AC electric power generated by the electric motor is returned from a pantograph to the AC power supply.
  • the regenerative load as seen by the electric vehicle during regenerative braking may be reduced suddenly due to pantograph-overhead line disconnection, rapid change of load of another electric vehicle connected to the overhead line and the like, and voltage across the filter capacitor may become higher than normal.
  • voltage across the capacitor becomes high, an abnormal voltage is applied to the semiconductor elements of the converter and inverter, and to the filter capacitor.
  • an overvoltage suppression circuit is arranged to form a short circuit across the filter capacitor through a resistance.
  • Patent Literature 1 describes a power conversion device mounted in an AC electric vehicle, in which the power conversion device avoids overheating damage of the overvoltage suppression resistor, even when the normal release operation does not occur, for example, due to failure of the AC switch and the like.
  • a current detector is provided that detects current in the overvoltage suppression resistor, and if the AC switch does not open normally, an AC circuit breaker is opened according to the condition of output from the current detector, and current from the AC power supply side to the overvoltage suppression resistor is cut off.
  • Patent Literature 2 mentions charging and discharging of a filter capacitor, improvement of utilization rate of initial charge resistance and a switch for initial charging, and preparation for the occurrence of erroneous simultaneous closing of the switch for initial charging and a switch for discharging.
  • a discharge circuit of a main circuit capacitor of the Patent Literature 2 is equipped with a discharging switch in a regeneration function-equipped sine wave converter which supplies electric power of an AC power supply through an AC reactor and a closed circuit to an initial charging circuit, a three-phase bridge circuit and a main capacitor that are inserted in the circuit. By closing the discharging switch, a circuit is formed for using the initial charge resistance forming the initial charging circuit as a discharging resistance.
  • Patent Literature 3 describes closing a contact for charging, and firing a self-arc extinguishing element of a converter to discharge a filter capacitor ( FIG. 5 of Patent Literature 3).
  • Patent Literature 4 describes current flowing through a circuit that includes a converter element, an initial charging contact and a charging resistance thereof, to cause discharge of a capacitor ( FIG. 5 of Patent Literature 4).
  • the overvoltage suppression circuit of Patent Literature 1 if the overvoltage suppression circuit is not formed, for example, failure of the overvoltage suppression switch causes application of abnormal voltage for a long period to the semiconductor elements of the converter and inverter, and to the filter capacitor. Such abnormal voltage may cause failure of the semiconductor elements or filter capacitor. The same problem occurs if the switch for discharging fails in the discharge circuit of Patent Literature 2.
  • the object of the present disclosure is to prevent application of overvoltage to the semiconductor elements and filter capacitor, even when an overvoltage suppression circuit is not formed due to failure of the overvoltage suppression switch.
  • the power conversion device of the present disclosure includes:
  • the power conversion device further includes:
  • a separate discharge path is formed that uses existing circuit elements and does not pass through an overvoltage control switch, and the application of overvoltage to the semiconductor elements and filter capacitor can be prevented, even when an overvoltage suppression circuit is not formed due to failure of the overvoltage suppression switch.
  • FIG. 1 shows an example configuration of a power conversion device according to Embodiment 1 of the present disclosure.
  • the power conversion device uses a transformer 3 to transform AC electric power supplied by a pantograph 1, and after conversion to DC electric power by a converter 4, uses an inverter 6 to convert to three-phase AC electric power of variable voltage and variable frequency to drive an electric motor 7.
  • the power conversion device can also perform regeneration. During regeneration operation, AC electric power from the electric motor 7 is converted by the inverter 6 into DC electric power, which is converted to AC electric power by the converter 4 for return through the transformer 3 to the overhead line side from the pantograph 1.
  • the pantograph 1 sliding against the overhead line (non-illustrated) and connecting to the AC power supply is connected through an AC breaker 2 to a primary winding of the transformer 3.
  • the AC breaker 2 switches between allowing and blocking flow of current between the pantograph 1 and the transformer 3.
  • a charging switch (first contactor) 9 and a charging resistor 10 are connected in series between the transformer 3 and the converter 4.
  • an AC switch (second contactor) 8 is connected in parallel to the charging switch 9 and the charging resistor 10.
  • the AC switch 8 bypasses the charging switch 9 and the charging resistor 10, and switches between allowing and blocking of current flow between the transformer 3 and the converter 4.
  • the converter 4 for example, is configured as a bridge circuit of arm members that include semiconductor elements, for example, such as insulated-gate bipolar transistors (IGBT), flywheel diodes and the like.
  • the filter capacitor 5 and the inverter 6 are connected in parallel to the DC side of the converter 4.
  • the inverter 6 converts the DC electric power to three-phase AC electric power.
  • the electric motor 7 is connected to the three-phase AC side of the inverter 6.
  • the overvoltage suppression circuit 14 includes an overvoltage suppression resistor 11 and an overvoltage suppression switch 12 connected together in series.
  • the overvoltage suppression switch 12 is a semiconductor element, for example, such as a thyristor, IGBT and the like.
  • the overvoltage detector 13 detects voltage across the filter capacitor 5.
  • the detection signal EFC of the overvoltage detector 13 is sent to the control unit 24.
  • the control unit 24 controls the AC breaker 2, AC switch 8, charging switch 9, converter 4, overvoltage suppression circuit 14 and inverter 6, runs the electric motor 7, and returns regeneration electric power from the electric motor 7 to the AC power supply side.
  • the power conversion device functions as described below.
  • the high voltage AC electric power collected from the AC power supply (non-illustrated) using the pantograph 1 is supplied through the AC breaker 2 to the primary winding of the transformer 3.
  • AC electric power lowered to a certain voltage is supplied by a secondary winding of the transformer 3 to the converter 4.
  • the control unit 24 closes the charging switch 9 in a state in which the AC switch 8 is open, and supplies AC electric power to the converter 4 through the charging resistor 10.
  • the converter 4 converts AC electric power to DC electric power.
  • the filter capacitor 5 becomes charged during the initialization.
  • the control unit 24 closes the AC switch 8 and opens the charging switch 9.
  • the converter 4 operates so as to maintain a constant voltage across the filter capacitor 5.
  • the inverter 6 drives the electric motor 7, that is, the AC load, by converting DC electric power from the filter capacitor 5 into variable voltage and variable frequency three-phase AC electric power.
  • control unit 24 causes the converter 4 and the inverter 6 to operate in reverse so that AC electric power from the electric motor 7 returns to the overhead line through the transformer 3 and from the pantograph 1.
  • the AC breaker 2 and the AC switch 8 are in the closed state, and the charging switch 9 is open.
  • the overvoltage suppression switch 12 is open so that no current flows in the overvoltage suppression circuit 14.
  • control unit 24 monitors the voltage detected by the overvoltage detector 13, and when this voltage exceeds a predetermined value, halts the regeneration operation and closes the overvoltage suppression switch 12.
  • FIG. 2 shows an example configuration of a control unit of the power conversion device according to Embodiment 1.
  • the control unit 24 includes a voltage determiner 31, a contactor ON-OFF determiner 32 and a semiconductor element ON-OFF determiner 33.
  • the voltage determiner 31 When the signal EFC of the overvoltage detector 13 is greater than or equal to a predetermined voltage OVDref, the voltage determiner 31 outputs an overvoltage signal OVD.
  • the overvoltage signal OVD is input to the contactor ON-OFF determiner 32 and the semiconductor element ON-OFF determiner 33.
  • the contactor ON-OFF determiner 32 Upon receiving the overvoltage signal OVD, the contactor ON-OFF determiner 32 generates an overvoltage suppressing ON signal OVT.
  • the overvoltage suppressing ON signal OVT is sent to the overvoltage suppression circuit 14 ( FIG. 1 ) and closes the overvoltage suppression switch 12.
  • the contactor ON-OFF determiner 32 Upon receiving the overvoltage signal OVD, the contactor ON-OFF determiner 32 generates an overvoltage suppressing ON signal OVT.
  • the overvoltage suppressing ON signal OVT is sent to the overvoltage suppression circuit 14 ( FIG. 1 ) and closes the overvoltage suppression switch 12.
  • the contactor ON-OFF determiner 32 generates a K-usage-OFF signal KOFF for opening the AC switch 8.
  • the K-usage-OFF signal KOFF opens the AC switch 8 ( FIG. 1 ).
  • the semiconductor element ON-OFF determiner 33 Upon receiving of the overvoltage signal OVD, the semiconductor element ON-OFF determiner 33 generates a converter OFF signal GCOFF.
  • the converter OFF signal GCOFF is sent to the converter 4 ( FIG. 1 ), and turns all converter elements 41 to 44 OFF.
  • the semiconductor element ON-OFF determiner 33 generates an inverter OFF signal GIOFF.
  • the inverter OFF signal GIOFF is sent to the inverter 6 ( FIG. 1 ), and turns all inverter elements 61 to 66 OFF.
  • the control unit 24 determines whether the overvoltage suppression circuit 14 is operating during outputting of the overvoltage suppressing ON signal OVT. For example, if the overvoltage signal OVD continues to be output for a fixed period after the start of output of the overvoltage suppressing ON signal OVT, the determination is made that the overvoltage suppression circuit 14 is not operating.
  • Non-operation of the overvoltage suppression circuit 14 can be determined, for example, by sensing of current flowing through the overvoltage suppression resistor 11. Additionally, a determination can be made that the operation suppression circuit 14 is not operating, for example, when the potential difference across the overvoltage suppression resistor 11 is greater than a predetermined value.
  • the contactor ON-OFF determiner 32 When there is a determination that the overvoltage suppression circuit 14 is not operating, the contactor ON-OFF determiner 32 generates a for-AK-use ON signal AKON for closing the charging switch 9 and a for -VCB-use OFF signal VCBOFF for opening the AC breaker 2.
  • the for-AK-use ON signal AKON is sent to the charging switch 9 ( FIG. 1 ), and closes the charging switch 9.
  • the for -VCB-use OFF signal VCBOFF is sent to the AC breaker 2 ( FIG. 1 ), and opens the AC breaker 2.
  • the semiconductor element ON-OFF determiner 33 When determination is made that the overvoltage suppression circuit 14 is not operating, the semiconductor element ON-OFF determiner 33 generates a OVD-in-progress converter ON signal GCON_OV.
  • the OVD-in-progress converter ON signal GCON_OV is sent to the converter 4 ( FIG. 1 ), and turns for example, the converter element 41 and the converter element 44 ON.
  • the filter capacitor 5 is short-circuited through a route including the terminal 51, converter element 41, charging resistor 10, charging switch 9, transformer 3 secondary winding, converter element 44 and terminal 52, and is discharged through the charging resistor 10. This releases the overvoltage applied to the converter 4, inverter 6 and filter capacitor 5.
  • the converter element 42 and the converter element 43 may be turned ON by the OVD-in-progress converter ON signal GCON_OV.
  • the filter capacitor 5 is shorted through a route that includes the terminal 51, converter element 42, transformer 3 secondary winding, charging switch 9, charging resistor 10, converter element 43 and terminal 52.
  • the converter element 41 (or the converter element 43) connected to the terminal 51 (or terminal 52) of the filter capacitor 5 and the charging resistor 10 is turned ON, and the converter element 44 (or the converter element 42) connected to the other terminal 52 (or terminal 51) of the filter capacitor 5 and the terminal of the transformer 3 not connected to the charging resistor 10 is turned ON.
  • FIG. 3 is a flowchart showing one example of operation of overvoltage suppression according to Embodiment 1.
  • the control unit 24 waits for generation of the overvoltage signal OVD (NO in step S01).
  • the overvoltage signal OVD is generated (YES in step S01)
  • the inverter OFF signal GIOFF is output (step S02)
  • the converter OFF signal GCOFF is output (step S03).
  • the K-usage-OFF signal KOFF for opening the AC switch 8 is output (step S04), and the overvoltage suppressing ON signal OVT is output (step 05).
  • current is anticipated to flow in the overvoltage suppression resistor 11 (step S06), voltage of the filter capacitor 5 is monitored, and a determination is made as to whether the overvoltage suppression circuit 14 is operating (step S07).
  • processing enters a status quo-maintenance state. Thereafter, when voltage of the filter capacitor 5 declines and voltage of the pantograph 1 returns to the overhead line voltage, processing returns to the initial state (not illustrated).
  • step S07 When determination is made that the overvoltage suppression circuit 14 is not operating (NO in step S07), the for -VCB-use OFF signal VCBOFF for opening the AC breaker 2 is output (step S08), and the for-AK-use ON signal AKON for closing the charging switch 9 is output (step S09). Then the OVD-in-progress converter ON signal GCON_OV is output (step S10), and processing ends.
  • FIG. 4 shows an example configuration of a power conversion device according to Embodiment 2 of the present disclosure.
  • the charging resistor 10 is used as a resistance for overvoltage suppression.
  • the charging resistor 10 is also used for short-circuiting the filter capacitor 5, in the same manner as in Embodiment 1, when the overvoltage signal OVD is generated and determination is made that the overvoltage suppression circuit is not operating.
  • Embodiment 1 the overvoltage suppression resistor 11 and the overvoltage suppression switch 12 are omitted from Embodiment 2, which is equipped instead with an overvoltage suppression switch 15.
  • the overvoltage suppression switch 15 connects between the terminal 52 of the filter capacitor 5 and the node connecting together the charging switch 9 and the charging resistor 10.
  • the overvoltage suppression circuit includes the converter element 41, the charging resistor 10 and the overvoltage suppression switch 15.
  • the control unit 24 outputs the inverter OFF signal GIOFF, converter OFF signal GCOFF, AC switch OFF signal KOFF and overvoltage suppressing ON signal OVT.
  • the converter elements 42 to 44 are turned OFF by the converter OFF signal GCOFF according to Embodiment 2
  • a partial-converter ON signal GCON is output, and the converter element 41 is turned ON.
  • the filter capacitor 5 is short-circuited though a route including the terminal 51, converter element 41, charging resistor 10, overvoltage suppression switch 15 and terminal 52.
  • the charging resistor 10 is used as the overvoltage suppression resistance, and in the same manner as in Embodiment 1, determination is made as to whether the overvoltage suppression circuit is operating. When determination is made that the overvoltage suppression circuit is not operating, processing is similar to that of Embodiment 1.
  • the control unit 24 When determination is made that the overvoltage suppression circuit is not operating, the control unit 24 outputs the for -VCB-use OFF signal VCBOFF and opens the AC breaker 2, and outputs the for-AK-use ON signal AKON and closes the charging switch 9. Then the OVD-in-progress converter ON signal GCON_OV is output, and the converter element 41 and converter element 44 are turned ON, or alternatively, the converter element 42 and converter element 43 are turned ON. However, in the case of turning ON the converter element 42 and converter element 43, the converter element 41 is turned OFF.
  • FIG. 5 is a flowchart showing one example of operation of overvoltage suppression according to Embodiment 2.
  • step S 13 is executed in place of step S03, among the steps of the flowchart of FIG. 3 . Otherwise, processing is similar to that of Embodiment 1.
  • step S01 when the overvoltage signal OVD is generated (YES in step S01), the inverter OFF signal GIOFF signal is output (step S02), and the converter OFF signal GCOFF and partial-converter ON signal GCON are output (step S 13). Operation thereafter is similar to that of step S04 through step S10 of FIG. 3 .
  • the embodiments are explained above by assuming cases in which electric power is received from the external circuit and the transformer 3 is used in the electric power transmission circuit for output of AC electric power.
  • the electric power transmission circuit is not limited to the transformer, and in a case in which a breaker (AC breaker 2) for passing or blocking flow of current between the electric power transmission circuit and the external circuit is opened, DC current can be made to flow through an electric power transmission circuit between the terminals of the output side.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Inverter Devices (AREA)
  • Rectifiers (AREA)
EP13900127.5A 2013-12-27 2013-12-27 Dispositif de conversion de puissance Active EP3089343B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/085132 WO2015097868A1 (fr) 2013-12-27 2013-12-27 Dispositif de conversion de puissance

Publications (3)

Publication Number Publication Date
EP3089343A1 true EP3089343A1 (fr) 2016-11-02
EP3089343A4 EP3089343A4 (fr) 2017-08-16
EP3089343B1 EP3089343B1 (fr) 2020-01-22

Family

ID=53477799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13900127.5A Active EP3089343B1 (fr) 2013-12-27 2013-12-27 Dispositif de conversion de puissance

Country Status (4)

Country Link
US (1) US9787214B2 (fr)
EP (1) EP3089343B1 (fr)
JP (1) JP5996130B2 (fr)
WO (1) WO2015097868A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
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CN108896885A (zh) * 2018-07-11 2018-11-27 云南电网有限责任公司电力科学研究院 一种配电变压器局部放电及过电压监测设备
WO2019043591A1 (fr) * 2017-08-29 2019-03-07 Eaton Intelligent Power Limited Dispositif de commande de moteur à disjoncteur à semi-conducteur
WO2019065472A1 (fr) * 2017-09-26 2019-04-04 Neturen Co., Ltd. Appareil d'alimentation électrique
CN111030067A (zh) * 2019-12-26 2020-04-17 株洲中车时代半导体有限公司 电力机车接触网防烧断智能保护装置
EP4009505A1 (fr) * 2020-12-07 2022-06-08 Infineon Technologies Austria AG Agencement de convertisseur de puissance avec une résistance accrue aux surtensions

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DE102017111431A1 (de) * 2017-05-24 2018-11-29 Endress+Hauser SE+Co. KG Primärgetaktetes Schaltnetzeil
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CN111987749B (zh) * 2020-08-19 2023-01-20 国网陕西省电力公司 特高压直流故障后暂态过电压约束的电网机组调度方法
WO2023248321A1 (fr) * 2022-06-21 2023-12-28 三菱電機株式会社 Dispositif de commande de véhicule électrique et système de commande de véhicule électrique
CN115432033B (zh) * 2022-09-23 2023-10-27 西南交通大学 适用于多车共臂下的牵引变压器二次侧过电压防护方法
DE102022211546A1 (de) 2022-10-31 2024-05-02 Siemens Mobility GmbH Antriebssystem für ein Fahrzeug

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WO2019043591A1 (fr) * 2017-08-29 2019-03-07 Eaton Intelligent Power Limited Dispositif de commande de moteur à disjoncteur à semi-conducteur
US11791619B2 (en) 2017-08-29 2023-10-17 Eaton Intelligent Power Limited Motor control device with solid state circuit breaker
WO2019065472A1 (fr) * 2017-09-26 2019-04-04 Neturen Co., Ltd. Appareil d'alimentation électrique
CN108896885A (zh) * 2018-07-11 2018-11-27 云南电网有限责任公司电力科学研究院 一种配电变压器局部放电及过电压监测设备
CN108631418A (zh) * 2018-08-29 2018-10-09 新誉轨道交通科技有限公司 车辆充电器及车辆充电系统
CN111030067A (zh) * 2019-12-26 2020-04-17 株洲中车时代半导体有限公司 电力机车接触网防烧断智能保护装置
EP4009505A1 (fr) * 2020-12-07 2022-06-08 Infineon Technologies Austria AG Agencement de convertisseur de puissance avec une résistance accrue aux surtensions
US11916472B2 (en) 2020-12-07 2024-02-27 Infineon Technologies Austria Ag Power converter arrangement with increased surge voltage robustness

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JP5996130B2 (ja) 2016-09-21
WO2015097868A1 (fr) 2015-07-02
EP3089343B1 (fr) 2020-01-22
JPWO2015097868A1 (ja) 2017-03-23
US20160329824A1 (en) 2016-11-10
EP3089343A4 (fr) 2017-08-16
US9787214B2 (en) 2017-10-10

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